Massage attachment



FIG. 1 is a top perspective view of a massage attachment, showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view, the rear, right side and left side elevational views being mirror images thereof; and,

FIG. 5 is a bottom perspective view thereof.

The broken lines shown in the figures are for the purpose of illustrating portions of the massage attachment that form no part of the claimed design. 

CLAIM The ornamental design for a massage attachment, as shown and described. 